Pentax 645 Rear Converter-A 1.4X Teleconverter (120,200,300,600)

Designed primarily for use with the Pentax A* 300mm f4 ED IF, the 1.4x Rear Converter-A, transforms a splendid image maker into an incredible 420mm f5.6 optical marvel. Supplied with electrical contacts which transmit signals between the camera and the lens, it also maintains and permits the use of all automatic lens and camera functions including Programmed Auto Exposure. Features Include: * Also Compatible with the Pentax 645 120 f4, 200 f4 and 600 f5.6.